Abstract #2489

Case report: Three-dimensional visualization of the normal human perirectal muscle with diffusion tensor imaging (DTI)

Koji Tokunaga¹, Shigeki Arizono¹, Koji Fujimoto², Tomoaki Okada³, Katsutoshi Murata⁴, Hiroyoshi Isoda¹, and Kaori Togashi¹

¹Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan, ²Human Brain Research Center, Kyoto University Graduate School of Medicine, Kyoto, Japan, ³Division of Gastrointestinal Surgery, Department of Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan, ⁴Siemens Healthcare K. K., Tokyo, Japan

Diffusion tensor imaging (DTI) can provide the directionality of water diffusion in tissues, informing on its underlying microstructures and microdynamics. There has been no previous report on the visualization of anterior portion of the longitudinal anal muscle (aLAM). In this case study, we present the 3D visualization of the aLAM in normal male subjects with DTI. By adjusted parameters for DTI sequence, we could successfully visualize thin smooth muscle layer of the rectum. This technique could be useful when planning operation for rectal and anal diseases.

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